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Particulate emission is a growing concern for wood stove manufacturers with their strong commitment to go beyond existing Canadian/American emission regulations to further improve health issues and the environment. In this study, different wood stove geometries and configurations are compared to characterize the main parameters influencing particle formation and dejection to facilitate the design of new prototypes. Thus, wood stove design parameters are investigated through experimentation and through Computational Fluid Dynamics CFD in order to find design guidelines for reduction of particulate emission. The method used in the present study is adapted from the certification method developed by the EPA/CSA that is currently used by the industry to characterise particulate emitted in the atmosphere from a wood stove. In order to better describe particulate emission and the way it behaves in a given wood stove designed for different bum rates, the current study also considered the internal temperature distribution obtained with internal thermocouples and gas emissions measured by FT-IR, FID, 02 analysers. From data analysis it was then possible to compare the emitted gas composition, the air/fuel ratio, the overall stove efficiency and the air flow circulation inside the firebox. In light of these results, one obvious rule that came out was that the equivalence ratio O should be kept fairly steady between 0.4 and 0.5 during the bum cycle to ensure better combustion for a better control on emissions.
combustion, computational fluid dynamics, design, gas emissions, thermocouples, wood,
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